Gasket cutter



Aug. 29, 1933.

R. A. HALL GASKET CUTTER Filed Feb. 25, 1932 ,3 Y Inventor n /2 /7 C 7 dy):0na 4 /4 &//

1 By wee/$3M A Horney Patented Aug. 29, 1933 1,924,717

UNITED STATES ATENr orF cr.

Application February 25,1932. Serial No. 595,198

' 3 Claims. (01. 1er s2 My invention relates to means-for accurately 17 for locking the body on the rod at a selected cutting sheet material. 7 position thereof.

My invention relates specifically to a gasket The block 16 has between arms 18, and excutting device which is especially adapted for tending from its lower side a roller 19 for a pur-' use with a hand brace or with a machine actuator. pose to be indicated. The opposite end of the 60 It is an important object of my invention cutter bar is formed with a reduced spindle 20. to provide a device of this kind which cleanly Upon this reduced spindle is adapted to be and accurately cuts gaskets of very narrow width, placed a pair of dished cutter disks 21,22, which and which is especially constructed to enable this have hubs 23, 24, whose exterior diameter is 0 to be done. approximately the same as that of the cutter t It is also an important object of my invention bar 12. to provide a simple and inexpensive device of It will be observed that these cutters 21, 22, this kind in which ruggedness, and accuracy in have their concavities facing radially inwardly. results is not sacrificed, despite its low cost. The hub 23 of the cutter 21 extends from the oth bj ts and advantages oi my invention radially outward side of the cutter 21, while the J will be apparent from a reading of the following' hub 24 of the cutter 22 extends radially inwarddescription and drawing, wherein for purposes 1y therefrom. It will be seen that the end of of illustration, 1 have shown a preferred embodithe hub 24 engages the shoulder 25 on the cutter ment of the invention, bar to prevent further inward movement of the In the drawing: cutter 22. A plurality of washers 26 of the same Figure l is a general side elevational view of the Size as the Cutter bar 12 Separates t Cutt s device of the invention. 21, 22 to the desired distance, while another plu- Fig 2 is a top plan View thei-egf, showing rality of washers 27 is retained on the spindle portion thereof in section and, 20 and engaging the outward end of the hub Fig 3 is an eievatignai View of Fig 1, t k 23 for securing the cutter 21 in the proper relafrom the right thereof. tionship with the cutter 22.

Referring in detail t th drawing, her i Suitable lock nut means 28 is screwed on the like numerals refer to like parts throughout the d of h Shank 20 for maintaining t Strucsame, the numeral 5 refers generally to a suitable tule just ecited. 30 bed of metal or other material of a softer chart will be s v d t at th wa 26 acter than the cutters employed with the device, y b disposed in V ous relation to the cutand the numeral 6 refers to a sheet of gasket mateIS 011 the p n 20 S0 as to give d f terial to be worked upon by the cutters of the eht results, When the device is pp u device. ting the gasket material. At a suitable place in the bed 5 is an aperture It Will Observed that the Cutters 22 y 90\ to receive freely the centering point of the debe Very 3 related, Since the Washers vice so as to permit free movement toward the when removed, Will P t t e CO IVEX face of bed of t device during the Cutting operation, the cutter 22 to seat with the concaved face of and to properly maintain the same on a constant the cutter 21 whereby to enable the cutting of axis of rotation a narrower gasket than has heretofore been pos- The device comprises a shank 8 for reception in sible h a tool of this particular the brace chuck or other chuck and this is The disks are made concavo convex in order to better follow the curvature of the circle deformed with a generally cylindrical enlargement Y 9 on its lower end and provided with a concen- Scnbed' and cut more cleanly especlauy when tric sharpened point 10. The cylindrical enlarge- Work.

ment 9 is provided with a diametrical opening When using the cutter with a hand brace the 11 through which the round cutter bar 12 snugly rolier 19 is ery useful for balancing the presslides. The numeral 13 represents a thumb screw sure upon th gasket t t h tt 21, i or its equivalent operating through the sides of 22 e adapted to engage the gasket material 105i the enlargement 9 for engaging a flattened part just in advance of the roller 19 so as to have portion 15 on the side of the cutter bar to lock cutting engagement with the gasket material the cutter bar with respect to the enlargement 9. prior to the engagement with the gasket material On one end or" the cutter bar is carried a block or the bed 5 of the roller 19, so as not to disturb 16 which has operating therein a thumb screw the axial alinement of the centering device 10 11m operating closer together and on small gasket 1005 and its engagement with the opening 7 in the bed 5, and to insure accurate cutting of thegasket within fine limits.

Though I have shown and described herein a preferred embodiment of the invention, it is to be understood that changes in size, shape and materials and arrangement of parts can be made consistent with the spirit of the invention and the scope of the subjoined claims.

Having thus described my invention, what I claim as new is:-

1. The combination with a gasket cutter including an axially rotatable member, a transverse cutter bar carried thereby, and a plurality of cutter disks adjustable on the cutter bar, of a plurality of washers for interposition on the bar between the cutter disks for adjustably spacing them and between the disks and a portion of the bar for spacing the disks from the portion, and nut means threaded on the bar for maintaining the washers and disks in adjusted positions, said disks being convex concave and capable of being substantially nested for cutting a very narrow gasket, the concave sides of the disks being based radially inwardly with respect to the cutter bar to facilitate the operation of the cutter and cut cleanly.

2. In a rotary cutter, an axially rotatable member carrying a transverse cutter bar, a reduced threaded portion on one end of the cutter bar, and on the reduced portion a pair of convex concave cutter disks disposed with their convex sides radially outwardly, a radially outward tubular extension on the convex side of the radially outward disk, a radially inward tubular extension on the concave side of the radially inward disk, nut means on the reduced threaded portion for locking the disks in spaced and nested positions.

3. In a rotary cutter, an axially rotatable member carrying a transverse cutter bar, a reduced threaded portion on one end of the cutter bar, and on the reduced portion a pair of convexconcave cutter disks disposed With their convex sides radially outwardly, a radially outward tubular extension on the convex side of the radially outward disk, a radially inward tubular extension on the concave side of the radially inward disk, nut means on the reduced threaded portion for locking the disks in spaced and nested positions, and spacer means receivable on the threaded reduced portion between and inward and outward of the disks and radially inward of the nut means for adjustably locking the disks on the reduced threaded portion.

RAYMOND A. HALL. 

